The early kick monitoring based on the ultrasonic measurement techniques in deep drilling

The blowout accident is a major accident in the petroleum drilling system which may lead to extremely severe consequences. We can avoid a blowout by the use of effective early kick judgment method to detect the kick timely while the kick is a harbinger of the blowout. This paper describes the methods commonly used in the early kick monitoring, and proposes a method based on the Ultrasonic Doppler Effect used in early kick detection. The effectiveness of this method used in the deep drilling liquid is demonstrated.